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I was able to locate your records using your community details. From what I can tell, your order is tagged as Service Class (SC) 32 which means that there is a need for a technician ensure the connection from the outside going to your first phone socket. In addition, the NBN technician will bring with him the NCD box and install the said device. Once he's done with the work, you will need to connect the TPG-supplied modem to the NCD.
For your reference on how to setup the modem: NBN FTTC Setup - General Setup